THE ASTRONOMER Electronic Circular No 524 1991 May 25 19.43UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074 Telex: 9312111261 Answerback: TA G JANET BOXES: GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074 ------------------------------------------------------------------- TASV 0524+15 (=Q1991/11) Mike Collins, Sandy, reports discovery of a possible variable on photographs of the UK Nova/Supernova Patrol. The object, located at RA 05h24.8m DEC +15 09'(1950) was recorded at magnitude 10.6 on 1991 Jan 13.0UT whereas results in 1989 Oct place it as faint as mag 11.3. An e-mail chart follows: \\\\\\ Q1991/11 0524+15 variable in Ori (Mike Collins) S,120,20,S P,05h 24.8m +15 09' (1950) O,60,60,10.6,11.3 M,6,39,49 R,8.1,66,92,A M,8,62,82 R,9.1,83,59,B,R R,9.5,74,62,C M,9,14,58,27,51,71,82,47,106 R,10.0,34,28,D R,10.6,32,7,E,R M,10,17,95,85,109,75,99,6,107,42,20,108,51 M,10,109,22 R,11.2,50,33,F,R R,11.4,79,53,G R,11.6,64,72,H M,11,93,119,105,112,20,7,8,63,14,22 M,11,6,40,8,32,45,10,30,72,111,78,103,91 M,12,100,97,22,104,69,76,59,11,39,85,40,64,3,57 M,12,2,82,71,71,112,33,80,74,101,1,108,1 M,12,101,2,96,32,113,19,78,60,94,85,116,86,108,83 E,53 ////// Basic chart automatically generated by GSC2FIND ver 1.0 SUPERNOVA 1991ac IN ANONYMOUS GALAXY C. Pollas, Observatoire de la Cote d'Azur, reports his discovery of an apparent supernova of mag 18.5 on OCA Schmidt telescope Tech Pan films exposed on Jan. 26.2 and 27.2 UT, the object being located at R.A. = 12h58m55s.20, Decl. = +29 27'07".6 (equinox 1950.0). The host galaxy (mag 16) has its center located at R.A. = 12h58m55s.49, Decl. = +29 27'06".4. An Apr. 7.0 film shows nothing at the position of SN 1991ac to a limiting magnitude of 21. Something appears to be visible at the limit of exposures taken May 17.0 and 16.9, when the limiting magnitudes were 22 and 22.5, respectively. IAUC 5270 EDITORIAL ABSENCE I shall be away from May 26 09.00UT returning late on May 28. Please contact Denis Buczynski or Martin Mobberley if there are any urgent messages during that time, Guy M Hurst